. >> heartbroken community of newtown, connecticut, saying good-bye to two of the children killed in last week's school shooting, this as investigators reveal new details about the tragedy at sandy hook elementary. thanks for joining us tonight. i'm shawn yancy. >> i'm maureen umeh. as relatives begin to say good- bye to their slain children, investigators in connecticut continue to work to better understand what happened. that includes interviewing two injured witnesses and digging deeper into the gun and computer use of the 20-year-old gunman. two young victims laid to rest monday, 6-year-old jack pinto, a huge new york giant fan, and 6-year-old noah pozner who loved learning how things worked. his twin sister was in a different classroom and survived. >> he was celebrated as a pure innocent child who had the promise of life ahead of him who brought joy to his family and to his community and will be sorely missed. >> reporter: funerals are planned throughout the week as the investigation into the mass shooting continues. authorities established adam lanza shot his mother four times